352 Dr. H. Woodward — On a new Branchiopod 



horizontal, with muscle-fossce deeply excavated beneath the muscle- 

 plates. Patina below facets spreading, conical ; interradial sutures 

 depressed between facets. 



Genotype. Pmlidocrinun remest, Bather, n.sp. (Text-figs. 1-5.) 

 A Psalidocrinus with flat stem-facet ; depression of interradial 

 sutures not extending to lower half of patina; radial groove of deep 

 U shape, between elevated almost square-cut muscle-plates, which 

 bear marked articular depressions. 

 Another probable species is — 



Psalidocrinus stramhergensis (Remes). (Text-figs. 6-8.) 

 A (?) PmlidocrinuH with excavate stem-facet ; depression of inter- 

 radial sutures extending to stem-facet; radial groove small, at base 

 of wide V formed by upper borders of muscle-plates, which bear 

 restricted and faint articular depressions. 



The holotypes of both species are the only specimens yet known. 

 Both come from the Tithonian of the Gemeindesteinbruch (Obecni lorn), 

 at Stramberg, Moravia, and both are in the collection of Dr. M. Remes. 



EXPLANATION OF FIGURES (p. 351). 

 Specimen B. Psalidocrinus reinesi, n.sp. 

 The interradii are lettered arbitrarily -.4, C, E, G, I, according to the method 

 of E. T. Jackson. 



Fig. 1. The patina viewed from interradius A. The processes in interradii 

 A and I are imperfect above ; that in interradius C, though 

 fractured, is fairly complete. X 2 diam. 

 ,, 2. The patina from below, x 2 diam. 



,, 3. A radial facet, mainly based on that in radius J, but partly restored 

 on the evidence of other facets. The interradial processes are 

 broken above, x 3 diam. 

 ,, 4. The same facet seen from above. X 3 diam. 



,, 5. Section across interradial iirocess A (accidentally broken during 

 cleaning and subsequently repaired) just above the level of the 

 radial facet. The uppermost point is adcentral. x 3 diam. 



Specimen A. Psalidocrinus stramhergensis (Remes). 

 ,, 6. Section across an interradial process as in Fig. 5. x 3 diam. 

 ,,7. A radial facet. The interradial processes are broken above, as in 



Fig. 3. x 3 diam. 

 ,, 8. The same facet seen from above, x 3 diam. 



Drawings by A. H. Searle from the specimens and from sketches by 

 F. A. Bather. 



IV. — RociwALiA Pabkeei, a kew Branchiopod Crustacean from 

 THE Middle Coal-measurks of Sparth, Rochdale. 



By Henry Woodward, LL.D., F.R.S., F.G.S. 



IN the early days of geological investigation it was generally 

 supposed that the soft parts of animals and their more delicate 

 structures could not be found in a fossil state, but modern discoveries 

 have entirely revolutionized our ideas as to what is capable of 

 fossilization. 



The researches of Professor Naf^orst in Sweden and Dr. C. D. 

 Walcott in America have made us acquainted with the forms of the 



